CONSTITUENCY RESULT : Cardiff West
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Kevin Brennan | Labour | Male | 23,908 | 51.8% | -4.9 | ||
| Carolyn Webster | Conservative | Female | 12,922 | 28.0% | -1.8 | ||
| Boyd Clack | Plaid Cymru | Male | 3,864 | 8.4% | -1.1 | ||
| Callum Littlemore | Liberal Democrat | Male | 2,731 | 5.9% | +3.3 | ||
| Nick Mullins | Brexit Party | Male | 1,619 | 3.5% | 0.0 | ||
| David Griffin | Green | Male | 1,133 | 2.5% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 10,986 | |
| Percent | 23.8% | |
| Rank (1 = highest %) | 324 | |
| Turnout | ||
| Constituency | 67.4% | |
| Region | 66.6% | |
| UK | 67.3% | |
| Constituency in 2017 | 69.8% | |
| Size of electorate | 68,508 | |
| Valid votes cast | 46,177 |
